![Secure (Horstmann) SIR020 15-60 Minute Electric Water Heater Boost Timer (Replaces Electrisaver) - Ray Grahams DIY Store Secure (Horstmann) SIR020 15-60 Minute Electric Water Heater Boost Timer (Replaces Electrisaver) - Ray Grahams DIY Store](https://res.cloudinary.com/rglweb/image/fetch/f_auto/https://www.raygrahams.com/images/thumbs/0105133_700.jpg)
Secure (Horstmann) SIR020 15-60 Minute Electric Water Heater Boost Timer (Replaces Electrisaver) - Ray Grahams DIY Store
![Horstmann ELECTRISAVERE246 White Push Button Electronic Run-Back Timer With 2 - 6 Hour Boost Suitable For Immersion Heaters - Fits 1 Gang Box 3kW 13A - Internet Electrical Horstmann ELECTRISAVERE246 White Push Button Electronic Run-Back Timer With 2 - 6 Hour Boost Suitable For Immersion Heaters - Fits 1 Gang Box 3kW 13A - Internet Electrical](https://www.internet-electrical.co.uk/42369-large_default/horstmann-electrisavere246-white-push-button-electronic-run-back-timer-with-2-6-hour-boost-suitable-for-immersion-heaters-fits-1-gang-box-3kw-13a.jpg)
Horstmann ELECTRISAVERE246 White Push Button Electronic Run-Back Timer With 2 - 6 Hour Boost Suitable For Immersion Heaters - Fits 1 Gang Box 3kW 13A - Internet Electrical
![Secure (Horstmann) SIR021 30-120 Minute Electric Water Heater Boost Timer (Replaces Electrisaver) - Ray Grahams DIY Store Secure (Horstmann) SIR021 30-120 Minute Electric Water Heater Boost Timer (Replaces Electrisaver) - Ray Grahams DIY Store](https://res.cloudinary.com/rglweb/image/fetch/f_auto/https://www.raygrahams.com/images/thumbs/0103810_700.jpg)
Secure (Horstmann) SIR021 30-120 Minute Electric Water Heater Boost Timer (Replaces Electrisaver) - Ray Grahams DIY Store
![Horstmann Electrisaver Water Heating Boost Control | Remembers to switch of when you forget | Money saving products for off-peak electricity Horstmann Electrisaver Water Heating Boost Control | Remembers to switch of when you forget | Money saving products for off-peak electricity](http://www.gasapplianceguide.co.uk/Horstmann%20PDF/Horsmann%20Electrisaver%20img%201.jpg)
Horstmann Electrisaver Water Heating Boost Control | Remembers to switch of when you forget | Money saving products for off-peak electricity
![Secure Meters ECONOMY7QUARTZ2HOUR Horstmann 24 Hour Mechanical Quartz Controlled Economy 7 Immersion Heater Timer With 2 Hour Boost 3kW 13A 240V - Internet Electrical Secure Meters ECONOMY7QUARTZ2HOUR Horstmann 24 Hour Mechanical Quartz Controlled Economy 7 Immersion Heater Timer With 2 Hour Boost 3kW 13A 240V - Internet Electrical](https://www.internet-electrical.co.uk/42376-large_default/horstmann-economy7quartz2hour-24-hour-mechanical-quartz-controlled-economy-7-immersion-heater-timer-with-2-hour-boost-3kw-13a-240v.jpg)
Secure Meters ECONOMY7QUARTZ2HOUR Horstmann 24 Hour Mechanical Quartz Controlled Economy 7 Immersion Heater Timer With 2 Hour Boost 3kW 13A 240V - Internet Electrical
![Economy 7 immersion boiler with timer only for top element? Confused with how it's meant to work! — MoneySavingExpert Forum Economy 7 immersion boiler with timer only for top element? Confused with how it's meant to work! — MoneySavingExpert Forum](https://us-noi.v-cdn.net/6031891/uploads/editor/uy/rua81cdwofoy.jpg)
Economy 7 immersion boiler with timer only for top element? Confused with how it's meant to work! — MoneySavingExpert Forum
![Horstmann Economy 7 Quartz Immersion Heater Control - SparkShop, Online Electrical Distributors, based in the UK Horstmann Economy 7 Quartz Immersion Heater Control - SparkShop, Online Electrical Distributors, based in the UK](https://sparkshop.co.uk/media/catalog/product/cache/c0673456a1530adb60e518a8f6d4cc24/h/o/horstmann_economy_7_quartz_immersion_heater_control.jpg)
Horstmann Economy 7 Quartz Immersion Heater Control - SparkShop, Online Electrical Distributors, based in the UK
![Secure (Horstmann) Economy 7 Timer and Boost Control E7Q Horstmann Economy 7 Timer and Boost Control E7Q [E7Q] - £54.17 : Click4Electrics, Online Electrical Wholesaler Secure (Horstmann) Economy 7 Timer and Boost Control E7Q Horstmann Economy 7 Timer and Boost Control E7Q [E7Q] - £54.17 : Click4Electrics, Online Electrical Wholesaler](https://www.click4electrics.co.uk/images/12E7Q.jpg)